Construction data processing method and system based on big data

The invention provides a construction data processing method and system based on big data. The method comprises the following steps: performing feature selection on construction data of a to-be-processed power construction project to obtain feature data; performing feature screening on the source data and the feature data to find feature mark data; performing combined marking on the feature marking data and the local feature data of the source data to obtain combined feature data; and updating the label of each feature data and each feature data based on the weight calculation result of the combined feature data, and performing construction optimization on the to-be-processed power construction project based on the difference information of the updated feature data and the source data. According to the method, the data is optimized and updated in a pseudo tag iteration updating mode, so that the data result is stable and convergent, and the obtained updated data and the source data are subjected to differenti